Shuttle guard



Dec- 5, 1950 H. E. scHALLER 2,532,950

' sHU'r'rLE GUARD 4 Shee ts-Sheet 3 Filed Qct. 26, 1949 HAnoLD E. SCHALLQ INVENTOR.

ATTORNEY Dec' 5, 19 50 H. E. scHALLER 2532950 SHUTTLE GUARD Filed Oct. 26, 1949 4 sneeS-sheet 4 HA/zoLo E. SCHALLE|2 INVENTOR.

ATTORNEY Patented Dec. 5, 1950 SHUTTLE GUARD Harold E. Schaller, Boston, Mass., assignor to i Scotland Mills, Inc.

Application October 26, 1949, Serial No. 123,677

3 Claims.

This invention relates to looms and more especially to an improved shuttle guard therefor, adapted to be secured to the reed cap on the lay of the loom and having means normally urging the lower edge of the same outwardly away from the reed, and having other means associated therewith to cause the same to move downwardly so that its lower edge is in close proximity to the woven cloth upon the beat-up stroke of the lay, to thus tend to hold the shuttle against the reed in the event of its breaking out of the shed thus mim'mizing the possibility of the operator or a person standing nearby being injured as the shuttle is thrown out of its prescribed course.

It is another object of this invention to provide an improved shuttle guard for looms which is adapted to be secured to the reed cap and is provided with manually releasable torsion means normally urging the same to an outward position to permit a full shed by the Warp yards at the back stroke of the lay. Other means are provided which are adapted to engage the free lower edge of the shuttle guard upon the beat-up stroke of the lay to thus move the same downwardly to prevent its getting in the path of a float cutter such as shown in Patents 1,575,127, 2,192,410, 2,192,411' and a fioat cutter of applicant for which an application is now in course of preparation.

The releasable means are provided so that the shuttle guard may be pvoted upwardly so as to be disposed out of the way of the operator of the loom upon piecing the ends of the Warp yarns, as in drawing the Warp yarns through the reed of the loom. After the pivoting of the shuttle guard to an out of the way position has served its purpose, the shuttle guard may then be pvoted back to normal position, at which time the manually releasable means automatically springs back to a looking position to retain the shuttle guard in a normal Operating position.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds, when taken in connection with the accompanying drawings, in which- Figure 1 is a top plan view of a portion of a loom and showing the invention attached thereto;

Figure 2 is a Vertical sectional view on an enlarged scale and taken along the line 2-2 in i Figure 1;

Figure 3 is an enlarged detail view of the upper left-hand portion of the shuttle guard as shown in Figure 1;

Figure 4 is a Vertical sectional view taken along the line 4-4 in Figure 3;

Figure 5 is an elevation with parts in section and showing the left-hand portion of the shuttle guard applied to the reed cap of the lay of the loom and showing parts in section;

Figure 5-A is an extension of Figure 5 and showing the right-hand side of the shuttle guard with parts in section;

Figure 6 is a Vertical sectional view taken substantially along the line 6-6 in Figure 1;

Figure '7 is a View similar to Figure 6 but showing the parts in a different position;

Figure 8 is an elevation of the central portion of the shuttle guard and showing the parts in fully downward position;

Figure 9 is a view similar to Figure 8 and showing the shuttle guard as it is started to be raised to uppermost or inoperative position;

Figure 10 is a Vertical sectional view taken substantially along the line Ill- IO in Figure 8;

Figure 11 is a Vertical sectional view taken along the line ll-Il in Figure 2.

Referring more specifically to the drawings, the numerals Ill and l! indicate the side frames of a loom, which has a breast beam |2 on which are mounted suitable temple brackets 13 and |4 in which are resiliently mounted in a conventional manner temple bars IB to which to the free ends of which are secured temple housings |6 and these temple bars E5 are slidably mounted in the temple brackets 13 and 14 and are usually pressed towards the lay of the loom by tension means, not shown.

These conventional temple housings 'IB have mounted therein suitable corrugated rollers IB all of which are conventional and through which the selvage edges of the woven cloth 2G are passed. The loom is also equipped with a pair of swords 22 oscillatably mounted, in a conventional manner, on a rocker shaft, not shown, and these swords 22 have pitman rods 23 extending therefrom which are mounted on suitable cranks on a suitable crank shaft, not shown, for imparting back and forth movement to a lay. The lay is indicated at 25 and has a reed cap 26 associated therewith, between which is mounted a conventional reed 21. The loom is also equipped with a suitable sand roll 28 over which the cloth 20 passes to a suitable take-up mechanism, not shown.

The shed is formed in the loom from Warp threads W-l and W-Z by conventional harness mechanism, not shown, and through which shed, indicated at the point P, the shuttle is thrown back and forth from one end of the lay to the other, the Shuttle boxes being omitted in the drawings.

Now, it so happens that on very broad looms, such as looms employed for weaving bedspreads and the like, and employing a fioat cutter for cutting the floats formed in the weaving operation, there is a much greater tendency for a breakout of the shuttle than in narrower looms. A breakout, as is well known in the art, is Where the Shuttle is defiected through one of the sheds of the Warp, and therefore, is not guided from one side of the loom to the other, but if the Shuttle should break out through the upper warp, it might be travelling with Suincient force to fiy across the room a substantial distance away from the loom and strike a person and effect serious injury to the person.

It is, thei'efore, desirable to have a Shuttle guard to prevent Such breakouts and which will not interfere with the operation of the loom. In the present instance, there has been provided a plurality of brackets 35 which are secured to the loom by any suitable means such as bolts 36, the center one preferably being secured by means of a Screw El. These brackets have transverse bores therethrough in which is oscillatably mounted a rod 49. This rod to has a plurality of collars 4| secured thereon by any suitable means such as set screws 432, and these collars 4| have suitable radially disposed bores therein in which the inturned ends of an elongated rod 4.3 are secured by suitable means such as welding or a pressecl fit. The rod fill also has a plurality of collars fill secured thereon by any suitable means such as set screws '42, and extending from these collars 4d are short rods 135 whose outer ends are welded to the medial portion of the rod Also, a centrally disposed collar Q7 is Secured on the rod ll by any suitable means such as a set screw 43 and this collar Ill has a laterally extending portion 53 provided with a bore for receiving a relatively short rod which is secured in the extension 58 by any suitable means such as a rvet 53 or by a pressed fit and the outer end of this short rod 5| is welded to the rod 43. The outer ends of the rods 45 are also welded to the rod fill.

The rods '62 and G2' sliclably penetrate the ends of a pipe 83 and have their outer ends bent at right angles and welded to cuffs E55 and B5' adjustably secured on the rod GS, such as by set screws il'l. The pipe 63 has welded thereto a plurality of short rods f which have their other ends welded to the rod Q3. lThe purpose of the pipe 53 and the telescoping ends of rods 62 and 62' is to permit the overall length of rods 82 and S2' to be changed for different widths of cloth which necessitates the changing of the distance between the temples to be presently described. The pipe 53 will also give inoreased rigidity to the lower part of the Shuttle guard for conning a Shuttle in case of a breakout.

The rod has secured thereon, by any suitable means, such as set screws ft, a collar El having a bore in one face thereof into which one end of a torsion spring 12 is ntted, and this torsion spring 'E2 is loosely mounted on the shaft 4G and has its other end secured around the screw 37 which secures the bracket 35 to the lay of the loom. The torsion spring is provided to normally tend to move the free edge of the Shuttle guard or the pipe 82 upwardly and to hold it in raised position when the looking means, to be later described, are released. The

Shafts lit have also fixed thereon, by any suitable means such as a set screw 14, a collar 15 for confining one end of a compression spring l, which is loosely mounted on the shaft 40 and the other end of the compression spring Ibears against a collar 11 slidably mounted on the shaft 46.

This collar TI has an offset lip portion 18 which is adapted to cooperate with an offset lip portion l on collar 41. The collar 11 has a cavity in its upper surface, into which the lower end of a lever 82 loosely fits, said lever 82 being pivoted as at 83 on the lay of the loom, and having a weighted handle or Operating portion 34 on its upper end.

With the parts in the position shown in Figure 8, the force of the torsion spring 'E2 is locked to prevent its oscillating the Shuttle guard, but upon movement of the parts to the position shown in Figure 9, it is seen that the torsion spring is then allowed to oscillate the shaft 49 to cause the tube or pipe 63 and its rod 62 and the entire assembly of the Shuttle guard to move on shaft li as a pivot upwardly, the Shuttle guard being shown starting its upward movement in Figure 9, and this Spring 12 Will raise it to upwardly pointing position out of the way of an operator rethreading a thread through the reed 27. After this rethreading has taken place, then the parts can be moved to the position shown in Figure 8 which is the operative position. The spring '12 is allowed to eXert its force to pivot the shuttle guard upwardly when the handle 84 is depressed manually to the position shown in Figure 9 against the compression spring 16.

It will be noted that the extension St does not occupy a complete Semi-Circle as it is cut away at its front as at 86 to allow face to t against the lower front portion of the extension T8 in normal operative position, or with the pipe G3 out of contact with the Warp and cloth but in Figures 5, 5-A and 8 the parts are shown in fully depressed position such as that occupied in Figure 7, whereas in Figure 1 the Shuttle guarcl is shown in Operating position.

Now, in order to prevent the tube or pipe 63 and rod 62 from interfering with a loat cutter which is usually mounted to traverse above the breast beam i, bumper means are provided for moving the free side of the Shuttle guard toward the rear of the loom to the position shown in Figure 2.

On each of the temple bars I 5 is provided a bolt 88 which is threadably mounted in a bore in the temple bars 5 and is locked in position by a lock nut 89. This bolt 88 has a head 90 thereon and slipped up against the head is a metallic sleeve 9| over which is placed a tubular resilient member, Such as rubber, and indicated at 92. The sleeve 9| and the tubular resilient member 92 are conned on the bolt 8B by means of a projection 93, and a snap washer 95 which presses the tubular resilient member 92 against the bolt head 9B. Therefore, upon a beat-up motion of the loom, the outer ends of the rod 62 will engage the resilient members 92 and move the Shuttle guard to the position shown in Figure 7 So that it will not extend out far enough to interfere with a fioat cutter as above described. The bolt 88 has an eccentric portion 97 on which the sleeve 9! is mounted, so that by loosening lock nut 89 and partially rotating the bolt 88, the distance between the side of roll 92 and the lay of the loom can be varied to cause the rod 62 to engage the bumpers 92 at the proper time.

It is thus seen that there has been provided a shuttle guard which will prevent a break-out of a shuttle from injuring operators or employees adjacent thereto and one which can be quickly elevated so as to gain access to the reed and also means have been provided for preventing the shuttle guard from moving into the pathway of a float cutter when used in association with a float cutter. It is, of course, evident that the shuttle guard could be employed on a loom not having a fioat cutter, and in which event it would, of course, not be necessary to provide the resilient bumper members 92.

In the drawings and specification there has been set forth a preferred embodim'ent of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of the invention being defined in the claims.

I claim:

1. Shuttle guard for a loom having a lay provided With a reed cap comprising a plurality of bearing brackets attached to the side of the reed cam next to the fell of the cloth being woven, an elongated rod oscillatably mounted in the bearing brackets, second rod disposed in spaced parallel relation to the first rod and having its ends bent at right angles to the longitudinal axis of the second rod and secured to the first rod, a third rod disposed in spaced parallel relation to the second rod and having its ends bent at right angles to the longitudinal axis of the second rod and secured to the second rod, and a plurality of cross rods secured between the first, second and third rods, a medial portion of the first rod having a collar fixed thereon, a torsion spring surrounding the first rod and having one of its ends anchored in the collar and having its other end anchored to the reed cap, said spring being biased to move the third rod upwardly away from the warp threads of the loom, said first rod having a second collar fixed thereon and having an offset portion extending from one end thereof, a loose collar on the first rod and spring means urging the loose collar towards the end of the second fixed collar, the loose collar also having an offset portion on its end adjacent the second fixed collar, and against which the offset portion of the second fixed collar is normally adapted to rest as a result of the torsion spring, and means for moving the loose collar away from the second fixed collar to allow the torsion spring to raise the shuttle guard on its pivoted first rod to substantially Vertical position, and releasing of the loose collar latching the Shuttle guard in raised position.

2. Shuttle'guard for a loom having a lay provided with a reed cap comprising a plurality of reed cap next to the fell of the cloth being woven, an elongated rod oscillatably mounted in the bearing brackets, second rod disposed in spaced parallel relation to the first rod and having its ends bent at right angles to the longitudinal axis of the second rod and secured to 'the first rod, a third rod disposed in spaced parallel relation to the second rod and having its ends bent at right angles to the longitudinal axis of the`second rod and secured to the second rod, and a plurality of cross rods secured between the first, second and third rods, spring means tending to normally move the first rod on its pivoi', to raise the second and third rods, and latch means for preventing upward movement of the second and third rods from their normal lowered position, and said loom having a pair of temples each provided with a bumper for engaging the end portions of the third rod to limit movement of the free side of the shuttle guard at the end of a beat-up stroke of the lay of the loom.

3. Shuttle guard for a loom having a lay provided with a reed cap comprising a plurality of bearing brackets attached to the side of the reed cap next to the fell of the cloth being woven, an elongated rod oscillatably mounted in the bearing brackets, second rod disposed in spaced parallel relation to the first rod and having its ends bent'l at right angles to the longitudinal axis of the second rod and secured to the first rod, a third rod disposed in spaced parallel relation to the second rod and having its ends bent at right angles to the longitudinal axis of the second rod and secured to the second rod, and a plurality of cross rods secured between the first, second and third rods, tension means normally moving the third rod upwardly, latching means for preventing upward movement of the third rod from its normal lowered position, and bumper means for engaging the third rod on a beat-up motion and limiting its further movement during completion of the beat-up motion.

HAROLD E. SCHALLER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 487,183 Hamilton et al Nov. 29, 1892 1,490,877 White Apr. 15, 1924 FOREIGN PATENTS Number Country Date 68,773 Germany May 26, 1893 588,010 Great Britain May 12, 1947 

